Wellington Free Ambulance has responded to 1656 calls in Wairarapa in the past year, an average of 32 a week, says service delivery manager Rob Ives.
He said Wairarapa was a large, rural area to service "which means dark country roads, long driveways and local names alongside official names".
Paramedics and 111 operators who direct the ambulance crews are experienced at locating patients and properties using sophisticated mapping systems but people can help.
Mr Ives says people hope they never have to make the call but, just like having an earthquake kit or installing smoke alarms, they need to be ready when they dial 111.
"If your mates, or tradespeople have trouble finding your property, you probably need to think about how you can make things easier for all visitors who may need to locate you," he said.